» Technical » Applicability of ASTM A105/ ASME SA-105 to ASME BPVC

Applicability of ASTM A105/ ASME SA-105 to ASME BPVC

August 30, 2019

Forgings made from ASTM A105 or ASME SA-105 materials, either forged flange or forged fittings, can be applied to the ASME Boiler and Pressure Vessel Codes (BPVC). The ASTM A105/ ASME SA-105 carbon steel forgings are designated with an UNS number K03504. It has a P-number of 1 and Group number of 2. It has an accurate equivalent ASME SA-181 (ASTM A181) Class 70, which can be used identically with SA-105 in any conditions of the Codes. According to Section II, Volume 1 of the Code, ASME SA-105/ SA-105M is identical with ASTM A105/ A105M.

Temp.-20~100150200300400
S20.020.020.020.020.0
Temp.500600650700750
S19.618.417.817.214.8
Temp.8008509009501000
S12.09.36.74.02.5
*Temp.: metal temperature, °F, not exceeding; *S: maximum allowable stress, ksi. *The ASTM A105/ ASME SA-105 forgings can be applied to Section I; Section III, Classes 2 and 3; Section VIII Division 1; and Section XII with maximum temperature limits of 1000°F, 700°F, 1000°F, and 650°F, respectively.

Temp.-20~100150200250300
Sm23.322.622.0-21.2
Temp.400500600650700
Sm20.519.618.417.817.2
*Temp.: metal temperature, °F, not exceeding; *Sm: design stress intensity, ksi. *The ASTM A105/ ASME SA-105 forgings can also be applied to Section III, Division 1, Classes 1 and MC, and Section III, Division 3, Classes TC and SC with the maximum temperature limit of 700°F.

Temp.-20~100150200250300
Sm24.022.622.021.621.2
Temp.350400450500550
Sm20.920.520.119.619.0
Temp.600650700750800
Sm18.417.817.214.812.0
Temp.8509009501000-
Sm9.36.74.02.5-
*Temp.: metal temperature, °F, not exceeding; *Sm: maximum allowable stress, ksi. *ASME SA-105 forgings can be applied to Section VIII, Division 2 with the maximum temperature limit of 1000°F. The maximum allowable stress values Sm at elevated temperatures are indicated in the Code.

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